publicationDate stringlengths 1 2.79k | title stringlengths 1 36.5k ⌀ | abstract stringlengths 1 37.3k ⌀ | id stringlengths 9 47 |
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2022-09-29 | Spin Dynamics in Patterned Magnetic Multilayers with Perpendicular Magnetic Anisotropy | The magnetization dynamics in nanostructures has been extensively studied in
the last decades, and nanomagnetism has evolved significantly over that time,
discovering new effects, developing numerous applications, and identifying
promising new directions. This includes magnonics, an emerging research field
oriented on ... | 2209.14824v2 |
2022-11-03 | Spin-orbit and exchange proximity couplings in graphene/1T-TaS$_2$ heterostructure triggered by a charge density wave | Proximity-induced fine features and spin-textures of the electronic bands in
graphene-based van der Waals heterostructures can be explored from the point of
tailoring a twist angle. Here we study spin-orbit coupling and exchange
coupling engineering of graphene states in the proximity of 1T-TaS$_2$ not
triggering the t... | 2211.02153v2 |
2023-01-30 | Transverse spin angular momentum of space-time surface plasmon polariton wave packet | In addition to longitudinal spin angular momentum (SAM) along the axis of
propagation of light, spatially structured electromagnetic fields such as
evanescent waves and focused beams have recently been found to possess
transverse SAM in the direction perpendicular to the axis of propagation. In
particular, the SAM of S... | 2301.12654v2 |
2023-07-18 | Proton 0.01 MeV resonance width and low-energy $S$-factor of p+10B fusion | {\bf{Purpose}:} In this paper, the proton resonance width of the
near-threshold resonance is calculated using two different approaches. The
values of the proton width are used to calculate the low-energy $S$-factor. \\
{\bf{Method:}} First, the proton resonance width is estimated using the mirror
symmetry of the resona... | 2307.08963v2 |
2005-12-14 | Quantum theory for electron spin decoherence induced by nuclear spin dynamics in semiconductor quantum computer architectures: Spectral diffusion of localized electron spins in the nuclear solid-state environment | We consider the decoherence of a single localized electron spin due to its
coupling to the lattice nuclear spin bath in a semiconductor quantum computer
architecture. In the presence of an external magnetic field and at low
temperatures, the dominant decoherence mechanism is the spectral diffusion of
the electron spin ... | 0512323v3 |
2016-02-25 | Electronic Spin Transport in Dual-Gated Bilayer Graphene | The elimination of extrinsic sources of spin relaxation is key in realizing
the exceptional intrinsic spin transport performance of graphene. Towards this,
we study charge and spin transport in bilayer graphene-based spin valve devices
fabricated in a new device architecture which allows us to make a comparative
study ... | 1602.07817v2 |
2001-11-15 | Temperature Isotropization in Solar Flare Plasmas due to the Electron Firehose Instability | The isotropization process of a collisionless plasma with an electron
temperature anisotropy along an external magnetic field ($T_\| ^e\gg
T_\perp^e$, $\|$ and $\perp$ with respect to the background magnetic field) and
isotropic protons is investigated using a particle-in-cell(PIC) code.
Restricting wave growth mainly ... | 0111303v1 |
2002-05-06 | New mechanism of pulsar radio emission | It is shown that pulsar radio emission can be generated effectively through a
streaming motion in the polar-cap regions of a pulsar magnetosphere causing
nonresonant growth of waves that can escape directly. As in other beam models,
a relatively low-energy high-density beam is required. The instability
generates quasi-... | 0205069v1 |
2005-04-21 | Effect of spatial-time dispersion on the propagation of electromagnetic waves in photonic crystals | We study the influence of the space and time dispersion on the frequency
dependence of the wave vectors of electromagnetic waves propagating in
three-dimensional photonic crystals. Two types of structures are considered:
media with weak periodic modulation of the permittivity, and photonic crystals
composed of the peri... | 0504556v2 |
2005-06-14 | Dressed state approach to matter wave mixing of bosons | A dressed state approach to mixing of bosonic matter waves is presented. Two
cases are studied using this formalism. In the first, two macroscopically
populated modes of atoms (two-wave mixing) are coupled through the presence of
light. In the second case, three modes of Bogoliubov quasiparticles (three-wave
mixing) ar... | 0506318v1 |
2007-01-29 | Local density of states and Friedel oscillations around a non-magnetic impurity in unconventional density wave | We present a mean-field theoretical study on the effect of a single
non-magnetic impurity in quasi-one dimensional unconventional density wave. The
local scattering potential is treated within the self-consistent $T$-matrix
approximation. The local density of states around the impurity shows the
presence of resonant st... | 0701732v1 |
1995-12-27 | Integral Transform Technique for Meson Wave Functions | In a recent paper [1] we have proposed a new approach for extracting the wave
function of the $\pi$-meson $\varphi_{\pi}(x)$ and the masses and
wave functions of its first resonances from the new QCD sum rules for
non-diagonal correlators obtained in [2]. Here, we test our approach using an
exactly solvable toy model... | 9512432v2 |
2003-10-05 | Non-steady-state extremely asymmetrical scattering of waves in periodic gratings | Extremely asymmetrical scattering (EAS) is a highly resonant type of Bragg
scattering with a strong resonant increase of the scattered wave amplitude
inside and outside the grating. EAS is realized when the scattered wave
propagates parallel to the grating boundaries. We present a rigorous algorithm
for the analysis of... | 0310023v1 |
2006-07-31 | Dynamic radiation force of acoustic waves on solid elastic spheres | The present study concerns the dynamic radiation force on solid elastic
spheres exerted by a plane wave with two frequencies (bichromatic wave)
considering the nonlinearity of the fluid. Our approach is based on solving the
wave scattering for the sphere in the quasilinear approximation within the
preshock wave range. ... | 0607295v1 |
2003-01-30 | Dynamic effects of electromagnetic wave on a damped two-level atom | We studied the dynamic effects of an electromagnetic(EM) wave with circular
polarization on a two-level damped atom. The results demonstrate interesting ac
Stark split of energy levels of damped atom. The split levels have different
energies and lifetimes, both of which depend on the interaction and the damping
rate of... | 0301166v1 |
2008-01-09 | A Diffractive Study of Parametric Process in Nonlinear Photonic Crystals | We report a general description of quasi-phase-matched parametric process in
nonlinear photonic crystals (NLPC) by extending the conventional X-ray
diffraction theory in solids. Under the virtual wave approximation,
phase-matching resonance is equivalent to the diffraction of the scattered
virtual wave. Hence a modifie... | 0801.1456v1 |
2008-09-05 | Matter-wave cavity gravimeter | We propose a gravimeter based on a matter-wave resonant cavity loaded with a
Bose-Einstein condensate and closed with a sequence of periodic Raman pulses.
The gravimeter sensitivity increases quickly with the number of cycles
experienced by the condensate inside the cavity. The matter wave is refocused
thanks to a sphe... | 0809.1054v2 |
2010-07-07 | Observational evidence of resonantly damped propagating kink waves in the solar corona | In this Letter we establish clear evidence for the resonant absorption
damping mechanism by analyzing observational data from the novel Coronal
Multi-Channel Polarimeter (CoMP). This instrument has established that in the
solar corona there are ubiquitous propagating low amplitude ($\approx$1 km
s$^{-1}$) Alfv\'{e}nic ... | 1007.1080v1 |
2011-02-03 | High speed imaging of traveling waves in a granular material during silo discharge | We report experimental observations of sound waves in a granular material
during resonant silo discharge called silo music. The grain motion was tracked
by high speed imaging while the resonance of the silo was detected by
accelerometers and acoustic methods. The grains do not oscillate in phase at
neighboring vertical... | 1102.0724v1 |
2011-12-17 | Experimental evidence of a triadic resonance of plane inertial waves in a rotating fluid | Plane inertial waves are generated using a wavemaker, made of oscillating
stacked plates, in a rotating water tank. Using particle image velocimetry, we
observe that, after a transient, the primary plane wave is subject to a
subharmonic instability and excites two secondary plane waves. The measured
frequencies and wav... | 1112.4053v1 |
2012-02-02 | Mechanism of destruction of transport barriers in geophysical jets with Rossby waves | The mechanism of destruction of a central transport barrier in a dynamical
model of a geophysical zonal jet current in the ocean or the atmosphere with
two propagating Rossby waves is studied. We develop a method for computing a
central invariant curve which is an indicator of existence of the barrier.
Breakdown of thi... | 1202.0352v1 |
2014-09-27 | Modulation instability in nonlinear positive-negative index waveguide array | Modulation instability in a nonlinear optical waveguide array with
alternating positive and negative refractive indices is investigated
analytically. Particular solutions of a system of coupled nonlinear equations
are found. These solutions describe propagation of the continuum backward and
forward waves in longitudina... | 1409.7846v1 |
2015-01-10 | Subwavelength edge detection through trapped resonances in waveguides | Lenses that can collect the perfect image of an object must restore
propagative and evanescent waves. However, for efficient information transfer,
e.g., in compressed sensing, it is often desirable to detect only the fast
spatial variations of the wave field (carried by evanescent waves), as the one
created by edges or... | 1501.02406v1 |
2015-08-27 | The Effect of Vertical Temperature Gradient on the Propagation of Three-dimensional Waves in a Protoplanetary Disk | Excitation and propagation of waves in a thermally stratified disk with an
arbitrary vertical temperature profile are studied. Previous analytical studies
of three-dimensional waves had been focused on either isothermal or polytropic
vertical disk structures. However, at the location in a protoplanetary disk
where the ... | 1508.06833v1 |
2015-12-03 | Dynamics of solitons in multicomponent long wave-short wave resonance interaction system | In this paper, we study the formation of solitons, their propagation and
collision behaviour in an integrable multicomponent (2+1)-dimensional long
wave-short wave resonance interaction ($M$-LSRI) system. First, we briefly
revisit our earlier results on the dynamics of bright solitons and demonstrate
the fascinating en... | 1512.01034v1 |
2016-02-19 | Broadband wide-angle absorption enhancement due to mode conversion in cold unmagnetized plasmas with periodic density variations | We study theoretically the mode conversion and the associated resonant
absorption of p-polarized electromagnetic waves into longitudinal plasma
oscillations in cold, unmagnetized and stratified plasmas with periodic spatial
density variations. We consider sinusoidal density configurations for which the
frequency band w... | 1602.06020v1 |
2016-08-18 | Vector soliton of the Love wave in ZnO/LiNbO_{3} structure | A theory of an acoustic vector soliton of the Love wave is constructed. The
nonlinear Love wave propagating along the interface between of a plane surface
layer and the elastic semi-space under the condition of acoustic self-induced
transparency is investigated. A thin resonance transition layer containing
paramagnetic... | 1608.05349v1 |
2016-08-01 | Radiation from structured-ring resonators | We investigate the scalar-wave resonances of systems composed of identical
Neumann-type inclusions arranged periodically around a circular ring. Drawing
on natural similarities with the undamped Rayleigh-Bloch waves supported by
infinite linear arrays, we deduce asymptotically the exponentially small
radiative damping ... | 1608.06477v1 |
2016-10-26 | Single-mode dispersive waves and soliton microcomb dynamics | Dissipative Kerr solitons are self-sustaining optical wavepackets in
resonators. They use the Kerr nonlinearity to both compensate dispersion and to
offset optical loss. Besides providing insights into nonlinear resonator
physics, they can be applied in frequency metrology, precision clocks, and
spectroscopy. Like othe... | 1610.08145v1 |
2017-09-05 | Bloch oscillations and resonant radiation of light propagating in arrays of nonlinear fibers with high-order dispersion | Bloch oscillations of spatio-temporal light wave packets in arrays of
nonlinear fibers with high-order dispersion are studied. The light wave
experiences discrete spatial diffraction along the waveguide array coordinate
together with continuous temporal dispersion including higher order terms. When
a gradient in the wa... | 1709.01504v1 |
2017-11-29 | Entanglement studies of resonating valence bonds on the frustrated square lattice | We study a short-range resonating valence bond (RVB) wave function with
diagonal links on the square lattice that permits sign-problem free wave
function Monte-Carlo studies. Special attention is given to entanglement
properties, in particular, the study of minimum entropy states (MES) according
to the method of Zhang ... | 1711.10717v1 |
2017-05-17 | Two-dimensional optical plasmons with mixed polarization on anisotropic resonant metasurface | Optical metasurfaces have great potential to form the platform for
manipulation of surface waves. A plethora of advanced surface-wave phenomena
utilizing negative refraction, self-collimation and channeling of 2D waves can
be realized through on-demand engineering of dispersion properties of a
periodic metasurface. In ... | 1705.06078v1 |
2019-02-07 | Anomalous quantum Hall effect of light in Bloch-wave modulated photonic crystals | Effective magnetic fields have enabled unprecedented manipulation of neutral
particles including photons. In most studied cases, the effective gauge fields
are defined through the phase of mode coupling between spatially discrete
elements, such as optical resonators and waveguides in the case for photons.
Here, in the ... | 1902.02887v1 |
2020-03-25 | THz amplification via a Raman scattering | A THz light amplifier and the corresponding methods are proposed, based on
the Raman interaction between a THz light and visible light lasers. Two lasers,
with their frequencies differing by that of a Langmuir wave, counter-propagate
inside a background plasma, exciting a rather strong Langmuir wave. The THz
light ampl... | 2004.11125v1 |
2020-03-31 | Dynamical density wave order in an atom-cavity system | We theoretically and experimentally explore the emergence of a dynamical
density wave order in a driven dissipative atom-cavity system. A Bose-Einstein
condensate is placed inside a high finesse optical resonator and pumped
sideways by an optical standing wave. The pump strength is chosen to induce a
stationary superra... | 2003.14135v2 |
2021-08-31 | Space-time wave localization in electromechanical metamaterial beams with programmable defects | A flexible wave localization is investigated using a spatial-temporal
modulation of point defects along the periodic array of electromechanical local
resonators of a piezoelectric bimorph beam. By changing the electrical
resonance of subsequent unit cells through a smooth and synchronized strategy,
a point defect is mo... | 2108.13742v1 |
2016-11-27 | Edge waves in plates with resonators: An elastic analogue of the quantum valley Hall effect | We investigate elastic periodic structures characterized by topologically
nontrivial bandgaps supporting backscattering suppressed edge waves. These edge
waves are topologically protected and are obtained by breaking inversion
symmetry within the unit cell. Examples for discrete one and two-dimensional
lattices elucida... | 1611.08919v2 |
2017-01-12 | Asymptotic Linear Stability of the Benney-Luke equation in 2D | In this paper, we study transverse linear stability of line solitary waves to
the $2$-dimensional Benney-Luke equation which arises in the study of small
amplitude long water waves in $3$D. In the case where the surface tension is
weak or negligible, we find a curve of resonant continuous eigenvalues near
$0$. Time evo... | 1701.03390v1 |
2017-03-13 | Gas dynamics in strong centrifugal fields | Dynamics of waves generated by scopes in gas centrifuges (GC) for isotope
separation is considered. The centrifugal acceleration in the GC reaches values
of the order of $10^6$g. The centrifugal and Coriolis forces modify essentially
the conventional sound waves. Three families of the waves with different
polarisation ... | 1703.04451v1 |
2019-01-11 | Three-wave interactions among surface gravity waves in a cylindrical container [DOI] | The motion of a container filled with fluid perturbs the free surface and may
result in spilling. In practice, most of the energy is localized in the modes
of lowest frequencies (the gravest modes), and sloshing can be predicted once
the dynamics of these modes is known. In this Rapid Communication, we
investigate the ... | 1901.03549v1 |
2020-05-17 | Quasi-periodic traveling waves on an infinitely deep fluid under gravity | We consider the gravity water waves system with a periodic one-dimensional
interface in infinite depth and we establish the existence and the linear
stability of small amplitude, quasi-periodic in time, traveling waves. This
provides the first existence result of quasi-periodic water waves solutions
bifurcating from a ... | 2005.08280v3 |
2021-01-11 | Detection of Gravitational Waves using Parametric Resonance in Bose-Einstein Condensates | An interesting proposal for detecting gravitational waves involves quantum
metrology of Bose-Einstein condensates (BECs). We consider a forced modulation
of the BEC trap, whose frequency matches that of an incoming continuous
gravitational wave. The trap modulation induces parametric resonance in the
BEC, which in turn... | 2101.03691v2 |
2021-03-29 | The influence of adsorbed atoms concentration on the temperature coefficient of resonant frequency of the quasi-Rayleigh wave | Within the model of self-consistent connection of quasi-Rayleigh wave with
adsorbed atoms, a method of constructing a new class of radiometric sensors of
the temperature and concentration of adsorbed atoms on the surface acoustic
waves is proposed. Based on the developed theory of the dispersion and acoustic
mode width... | 2103.15499v1 |
2021-05-05 | Utilizing the Hamiltonian dynamics to study resonant interactions of whistler-mode waves and electrons in the solar wind | The role of large amplitude whistler waves in the energization and scattering
of solar wind electrons has long been an interesting problem in Space Physics.
To study this wave-particle interaction, we developed a vectorized test
particle simulation with a variational calculation of the Lyapunov exponents.
From using se... | 2105.02265v1 |
2021-12-01 | Soliton self-compression and resonant dispersive wave emission in higher-order modes of a hollow capillary fibre | We investigate soliton self-compression and ultraviolet resonant dispersive
wave emission in the higher-order modes of a gas-filled hollow capillary fibre.
Our simple analytical scaling rules predict shorter required waveguides and
different energy scales when moving from the fundamental to higher-order modes.
Experime... | 2112.00369v1 |
2021-12-24 | Nematic dispersive shock waves from nonlocal to local | The structure of optical dispersive shock waves in nematic liquid crystals is
investigated as the power of the optical beam is varied, with six regimes
identified, which complements previous work pertinent to low power beams only.
It is found that the dispersive shock wave structure depends critically on the
input beam... | 2112.13114v1 |
2022-06-16 | Nonresonant scattering of relativistic electrons by electromagnetic ion cyclotron waves in Earth's radiation belts | Electromagnetic ion cyclotron waves are expected to pitch-angle scatter and
cause atmospheric precipitation of relativistic ($> 1$ MeV) electrons under
typical conditions in Earth's radiation belts. However, it has been a
longstanding mystery how relativistic electrons in the hundreds of keV range
(but $<1$ MeV), which... | 2206.08483v2 |
2022-07-01 | Whistler Waves As a Signature of Converging Magnetic Holes in Space Plasmas | Magnetic holes are plasma structures that trap a large number of particles in
a magnetic field that is weaker than the field in its surroundings. The
unprecedented high time-resolution observations by NASA's Magnetospheric
Multi-Scale (MMS) mission enable us to study the particle dynamics in magnetic
holes in the Earth... | 2207.00273v1 |
2022-10-11 | Linear and Nonlinear Disturbance Evolution on the Frustum of Hypersonic Ogive-Cylinders | Aspects of transition mechanisms on a $14^{\circ}$ sharp-nosed ogive-cylinder
at Mach~$6$ are elucidated by considering linear and nonlinear disturbance
evolution of freestream stochastic and wave packet forcing at different
locations downstream of the ogive-cylinder junction. The spectral response of
the stochastic fo... | 2210.05069v1 |
2023-04-12 | Understanding oscillons: standing waves in a ball | Oscillons are localised long-lived pulsating states in the three-dimensional
$\phi^4$ theory. We gain insight into the spatio-temporal structure and
bifurcation of the oscillons by studying time-periodic solutions in a ball of a
finite radius. A sequence of weakly localised {\it Bessel waves} -- nonlinear
standing wave... | 2304.05911v1 |
2023-06-21 | Phononic graded meta-MEMS for elastic wave amplification and filtering | Inspired by recent graded metamaterials designs, we create phononic arrays of
micro-resonators for frequency signal amplification and wave filtering.
Leveraging suspended waveguides on a thick silicon substrate, we hybridize
surface Rayleigh and Lamb flexural waves to effectively achieve phononic signal
control along p... | 2306.12076v1 |
2023-08-14 | Comment on `Painlevé Integrability and Multi-wave pattern for (2+1) dimensional Long wave-Short wave Resonance Interaction system' | In the paper by Sivatharani et al [1], the authors make a tall claim about
the integrability of a 2 component (2+1) dimensional Long wave Short wave
Resonance Interaction (2C(2+1)LSRI) equation with mixed sign which was already
claimed to be non integrable and hence known not to satisfy Painlev\'e [2]
property which th... | 2308.07043v1 |
2023-09-26 | Comparison of $\bar{\hbox{N}}\hbox{N}$ optical models | We compare the strong part of the $\bar{\hbox{N}}\hbox{N}$ interaction
obtained by the Nijmegen partial wave analysis and the results of some of the
most popular $\bar{\hbox{N}}\hbox{N}$ optical potentials in configuration
space. We have found severe discrepancies in most of the partial waves,
especially above $p_{Lab}... | 2309.14831v1 |
2023-10-19 | Locally Resonant Metagrating by Elastic Impedance Modulation | The optical and acoustic metagratings have addressed the limitations of
low-efficiency wave manipulation and high-complexity fabrication of
metamaterials and metasurfaces. In this research, we introduce the concept of
elastic metagrating and present the theoretical and experimental demonstration
of locally resonant ela... | 2310.12756v1 |
2023-10-25 | Optimal control for manipulating vibrational wave packets through polarizability interactions induced by non-resonant laser pulses | On the basis of optimal control theory, we numerically study how to optimally
manipulate molecular vibrational dynamics by using cycle-averaged
polarizability interactions induced by mildly intense non-resonant laser (NR)
pulses. As the essential elements to be controlled are the probability
amplitudes, namely, the pop... | 2310.16440v1 |
2013-01-14 | Polarised Electromagnetic wave propagation through the ferromagnet: Phase boundary of dynamic phase transition | The dynamical responses of ferromagnet to the propagating electromagnetic
field wave passing through it are modelled and studied here by Monte Carlo
simulation in two dimensional Ising ferromagnet. Here, the electromagnetic wave
is linearly polarised in such a way that the direction of magnetic field is
parallel to tha... | 1301.3071v2 |
2016-02-18 | Atom-light superposition oscillation and Ramsey-like atom-light interferometer | Coherent wave splitting is crucial in interferometers. Normally, the waves
after this splitting are of the same type. But recent progress in interaction
between atom and light has led to the coherent conversion of photon to atomic
excitation. This makes it possible to split an incoming light wave into a
coherent superp... | 1602.05685v1 |
2021-06-10 | Steering visible Dyakonov surface waves at the hyperbolic metasurface | Dyakonov surface wave existing at the interface with anisotropy offers a
promising way of guiding light in two-dimension with almost no loss. However,
predicted decades ago, the experimental demonstration of the Dyakonov surface
wave seems always challenging for the weak anisotropic indices from the natural
materials. ... | 2106.05699v1 |
1993-09-02 | MATTERS OF GRAVITY, a newsletter for the gravity community, number 2 | Table of contents:
Editorial 1
Correspondents 3
Some recent work in general relativistic Astrophysics 4
Two dimensional black holes 6
Resonant-mass gravitational wave detectors: an update 8
Universality and scaling in gravitational collapse 9
Gravitational Wave memories upgraded 11
Conference report: qu... | 9309003v1 |
2000-05-19 | Detection of Scalar Gravitational Waves | In this talk I review recent progresses in the detection of scalar
gravitational waves. Furthermore, in the framework of the Jordan-Brans-Dicke
theory, I compute the signal to noise ratio for a resonant mass detector of
spherical shape and for binary sources and collapsing stars. Finally I compare
these results with th... | 0005089v1 |
2000-11-07 | Scattering by Black Holes | This is a chapter on Black-hole Scattering that was commissioned for an
Encyclopaedia on Scattering edited by Pike and Sabatier, to be published by
Academic Press. The chapter surveys wave propagation in black-hole spacetimes,
diffraction effects in wave scattering, resonances, quasinormal modes and
related topics. | 0011025v2 |
2004-10-29 | Forced vibrations of wave equations with non-monotone nonlinearities | We prove existence and regularity of periodic in time solutions of completely
resonant nonlinear forced wave equations with Dirichlet boundary conditions for
a large class of non-monotone forcing terms. Our approach is based on a
variational Lyapunov-Schmidt reduction. It turns out that the infinite
dimensional bifurca... | 0410619v1 |
2005-12-02 | Periodic solutions of wave equations for asymptotically full measure sets of frequencies | We prove existence and multiplicity of small amplitude periodic solutions of
the completely resonant wave equation u_tt - u_xx + f(x,u)=0 with Dirichlet
boundary conditions where f(x,u)=a_2 u^2 + a_3(x) u^3 + O(u^4) or f(x,u)= a_4
u^4 + O(u^5) for a Cantor-like set of frequencies omega of asymptotically full
measure at... | 0512053v1 |
2005-07-20 | Discreteness and its effect on the water-wave turbulence | We perform numerical simulations of the dynamical equations for free water
surface in finite basin in presence of gravity. Wave Turbulence (WT) is a
theory derived for describing statistics of weakly nonlinear waves in the
infinite basin limit. Its formal applicability condition on the minimal size of
the computational... | 0507054v5 |
1996-06-24 | Ambiguities in the partial-wave analysis of pseudoscalar-meson photoproduction | Ambiguities in pseudoscalar-meson photoproduction, arising from incomplete
experimental data, have analogs in pion-nucleon scattering. Amplitude
ambiguities have important implications for the problems of amplitude
extraction and resonance identification in partial-wave analysis. The effect of
these ambiguities on obse... | 9606052v1 |
1998-06-17 | Effective field theory of resonant 2-level atoms | The phenomenological two-level atom is re-analysed using the methods of
effective field theory. By presenting the Dicke-Jaynes-Cummings model in real
space, an exact diagonalization is accomplished going beyond the rotating wave
approximation. The meaning of the symmetries and conserved quantities in the
theory is disc... | 9806057v1 |
2002-09-25 | Dynamical suppression of radiative decay via atomic deflection by a standing light wave | We consider the radiative decay of atoms scattered by a resonant standing
light wave. Scattering is shown to suppress the Rabi oscillations and to slow
down the atomic radiative decay giving rise to a power law behavior of the
time-dependent level populations rather than the exponential one. | 0209134v1 |
2007-04-26 | Low frequency dispersive estimates for the wave equation in higher dimensions | We prove dispersive estimates at low frequency in dimensions n greater or
equal to 4 for the wave equation for a very large class of real-valued
potentials, provided the zero is neither an eigenvalue nor a resonance. | 0704.3556v4 |
2008-04-20 | Fano-Type Resonance of Waves in Periodic Slabs | We investigate Fano-type anomalous transmission of energy of plane waves
across lossless slab scatterers with periodic structure in the presence of
non-robust guided modes. Our approach is based on rigorous analytic
perturbation of the scattering problem near a guided mode and applies to very
general structures, contin... | 0804.3148v1 |
2009-06-29 | Global Solutions for the Gravity Water Waves Equation in Dimension 3 | We show existence of global solutions for the gravity water waves equation in
dimension 3, in the case of small data. The proof combines energy estimates,
which yield control of L^2 related norms, with dispersive estimates, which give
decay in L^\infty. To obtain these dispersive estimates, we use an analysis in
Fourie... | 0906.5343v1 |
2010-05-12 | Continuous-wave spontaneous lasing in mercury pumped by resonant two-photon absorption | The first continuous-wave two-photon absorption laser-induced stimulated
emission (CTALISE) is demonstrated. The 7^1S-6^1P transition in mercury at
1014nm wavelength is used and selective lasing of different isotopes is
observed. | 1005.2098v2 |
2011-02-21 | Global Strichartz estimates for the wave equation with a time-periodic non-trapping metric | We obtain global Strichartz estimates for the solution $u$ of the wave
equation $\partial_t^2 u-\Div_x(a(t,x)\nabla_xu)=0$ with time-periodic metric
$a(t,x)$ equal to 1 outside a compact set with respect to $x$. We assume
$a(t,x)$ is a non-trapping perturbation and moreover, we suppose that there are
no resonances $z_j... | 1102.4169v1 |
2011-05-01 | Ultrabright Backward-wave Biphoton Source | We calculate the properties of a biphoton source based on resonant
backward-wave spontaneous parametric down-conversion. We show that the
biphotons are generated in a single longitudinal mode having a subnatural
linewidth and a Glauber correlation time exceeding 65 ns. | 1105.0144v1 |
2012-10-04 | Global existence for capillary water waves | Consider the capillary water waves equations, set in the whole space with
infinite depth, and consider small data (i.e. sufficiently close to zero
velocity, and constant height of the water). We prove global existence and
scattering. The proof combines in a novel way the energy method with a cascade
of energy estimates... | 1210.1601v1 |
2012-12-10 | Explicit formulas for the Schroedinger wave operators in R^2 | In this note, we derive explicit formulas for the Schroedinger wave operators
in R^2 under the assumption that 0-energy is neither an eigenvalue nor a
resonance. These formulas justify the use of a recently introduced topological
approach of scattering theory to obtain index theorems. | 1212.2230v1 |
2014-12-05 | Numerical investigation of acoustic solitons | Acoustic solitons can be obtained by considering the propagation of large
amplitude sound waves across a set of Helmholtz resonators. The model proposed
by Sugimoto and his coauthors has been validated experimentally in previous
works. Here we examine some of its theoretical properties: low-frequency
regime, balance of... | 1412.1985v1 |
2015-06-05 | Decay estimates for the wave equation in two dimensions | We establish Strichartz estimates (both reversed and some direct ones),
pointwise decay estimates, and weighted decay estimates for the linear wave
equation in dimension two with an almost scaling-critical potential, in the
case when there is no resonance or eigenvalue at the edge of the spectrum.
We also prove some ... | 1506.01832v2 |
2019-05-31 | Energy transfer model and large periodic boundary value problem for the quintic nonlinear Schrodinger equations | We study a dynamics and energy exchanges between a linear oscillator and a
nonlinear interaction state for the one dimensional, quintic nonlinear
Schrodinger equation. Grebert and Thomann proved that there exist solutions
with initial data built on four Fourier modes, that confirms the conservative
exchange of wave ene... | 1905.13680v1 |
2008-12-28 | Orbital resonances in discs around braneworld Kerr black holes | Rotating black holes in the brany universe of the Randall-Sundrum type are
described by the Kerr geometry with a tidal charge b representing the
interaction of the brany black hole and the bulk spacetime. For b<0 rotating
black holes with dimensionless spin a>1 are allowed. We investigate the role of
the tidal charge b... | 0812.5066v1 |
1994-06-27 | Quantum Phase Transition in the Frustrated Heisenberg Antiferromagnet | Using the J_1-J_2 model, we present a description of quantum phase transition
from Neel ordered to the spin-liquid state based on the modified spin wave
theory. The general expression for the gap in the spectrum in the spin-liquid
phase is presented. | 9406106v2 |
1996-02-15 | Spectral properties of Luther-Emery systems | We calculate the spectral function of the Luther-Emery model which describes
one-dimensional fermions with gapless charge and gapped spin degrees of
freedom. We find a true singularity with interaction dependent exponents on the
gapped spin dispersion and a finite maximum depending on the magnitude of the
spin gap, on ... | 9602087v1 |
1998-07-22 | Spin excitations in ferromagnetic manganites | An effective one-band Hamiltonian for colossal-magnetoresistance (CMR)
manganites is constructed and the spin excitations are determined. Fitting the
experimental data by the derived spin-wave dispersion gives an e_g -electron
hopping amplitude of about 0.2 eV in agreement with LDA band calculations. | 9807294v1 |
2001-08-05 | Low Energy Behaviour of XXZ Antiferromagnetic Spin Chain | Zero temperature phase diagram of XXZ spin chain in external magnetic field
is investigated at low energies using path integral approach.It has been shown
by spin wave analysis and then by nonlinear sigma model transformation that
below some critical field the system undergoes quantum Kosterlitz-Thouless
phase transiti... | 0108086v1 |
2003-01-30 | The Mixed Spin S=(1/2,1) XXZ Ferrimagnet at Zero Temperature | Linked cluster series expansions about the Ising limit are used to study
ground state preperties, viz. ground state energy, magnetization and excitation
spectra, for mixed spin S=(1/2,1) quantum ferrimagnets on simple bipartite
lattices in 1, 2, and 3-dimensions. Results are compared to second-order spin
wave theory an... | 0301580v1 |
2005-11-11 | Spin current as a response to external stress | It is theoretically predicted that a traveling shear wave will create a spin
current in certain direct-gap (for example III-V compound) semiconductors with
contributions from both the valence bands and the conduction band (for
$n$-doped semiconductors). We show that this spin-current is a property of the
Fermi-Dirac se... | 0511270v1 |
1997-03-25 | Post-Newtonian Approximation for Spinning Particles | Using an energy-momentum tensor for spinning particles due to Dixon and
Bailey-Israel, we develop the post-Newtonian approximation for N spinning
particles in a self-contained manner. The equations of motion are derived
directly from this energy-momentum tensor. Following the formalism of Epstein-
Wagoner, we also obta... | 9703071v1 |
2007-09-06 | Spin-gravity coupling and gravity-induced quantum phases | External gravitational fields induce phase factors in the wave functions of
particles. The phases are exact to first order in the background gravitational
field, are manifestly covariant and gauge invariant and provide a useful tool
for the study of spin-gravity coupling and of the optics of particles in
gravitational ... | 0709.0819v1 |
2009-04-09 | Interacting two helical edge modes in quantum spin Hall systems | We study theoretically the two interacting one-dimensional helical modes at
the edges of the quantum spin Hall systems. A new type of inter-edge correlated
liquid (IECL) without the spin gap is found. This liquid shows the diverging
density wave (DW) and superconductivity (SC) correlations much stronger than
those of t... | 0904.1453v2 |
2009-12-31 | Spin light mode of massive neutrino radiative decay in matter | Using the exact solutions for the Dirac neutrino wave function in presence of
matter we study the spin light mode in the process of neutrino transition from
initial heavier to final lighter state. The spin light is emitted due to the
neutrino nonzero transitional magnetic moment. | 1001.0101v1 |
2012-11-26 | Electron spin motion in the delta-function pulse | We formulate the Bargman-Michel-Telegdi (BMT) equation for electron spin
motion in a plane wave and in the Dirac delta-function pulse. We compare the
BMT solution with the Wolkow solution of the Dirac equation. The Wolkow
solution for the spin is not identical with the solution following from the BMT . | 1211.5889v1 |
2016-01-29 | The B-ring's surface mass density from hidden density waves: Less than meets the eye? | Saturn's B ring is the most opaque ring in our solar system, but many of its
fundamental parameters, including its total mass, are not well constrained.
Spiral density waves generated by mean-motion resonances with Saturn's moons
provide some of the best constraints on the rings' mass density, but detecting
and quantif... | 1601.07955v2 |
2017-02-07 | Dimensionless scaling of heat-release-induced planar shock waves in near-critical CO2 | We performed highly resolved one-dimensional fully compressible Navier-Stokes
simulations of heat-release-induced compression waves in near-critical CO2. The
computational setup, inspired by the experimental setup of Miura et al., Phys.
Rev. E, 2006, is composed of a closed inviscid (one-dimensional) duct with
adiabati... | 1702.01832v1 |
2006-04-10 | Polarization Transport of Transverse Acoustic Waves: Berry Phase and Spin Hall Effect of Phonons | We carry out a detailed analysis of the short-wave (semiclassical)
approximation for the linear equations of the elasticity in a smoothly
inhomogeneous isotropic medium. It is shown that the polarization properties of
the transverse waves are completely analogous to those of electromagnetic waves
and can be considered ... | 0604248v4 |
2019-04-10 | Optical excitation of propagating magnetostatic waves in an epitaxial Galfenol film by an ultrafast magnetic anisotropy change | Using a time-resolved optically-pumped scanning optical microscopy technique
we demonstrate the laser-driven excitation and propagation of spin waves in a
20-nm film of a ferromagnetic metallic alloy Galfenol epitaxially grown on a
GaAs substrate. In contrast to previous all-optical studies of spin waves we
employ lase... | 1904.05171v2 |
2020-06-15 | Gravitational shock waves and scattering amplitudes | We study gravitational shock waves using scattering amplitude techniques.
After first reviewing the derivation in General Relativity as an
ultrarelativistic boost of a Schwarzschild solution, we provide an alternative
derivation by exploiting a novel relation between scattering amplitudes and
solutions to Einstein's fi... | 2006.08283v2 |
2024-04-16 | Reconfigurable spin-wave platform based on interplay between nanodots and waveguide in hybrid magnonic crystal | We present a hybrid magnonic crystal composed of a chain of nanodots with
strong perpendicular magnetic anisotropy and Dzyaloshinskii-Moriya interaction,
positioned above a permalloy waveguide. The study examines two different
magnetization states in the nanodots: a single-domain state and an egg-shaped
skyrmion state.... | 2404.10493v1 |
2018-08-10 | Gravitational-Wave Geodesy: A New Tool for Validating Detection of the Stochastic Gravitational-Wave Background | A valuable target for advanced gravitational-wave detectors is the stochastic
gravitational-wave background. The stochastic background imparts a weak
correlated signal into networks of gravitational-wave detectors, and so
standard searches for the gravitational-wave background rely on measuring
cross-correlations betwe... | 1808.03716v3 |
2019-12-11 | Tailored elastic surface to body wave Umklapp conversion | Elastic waves guided along surfaces dominate applications in geophysics,
ultrasonic inspection, mechanical vibration, and surface acoustic wave devices;
precise manipulation of surface Rayleigh waves and their coupling with
polarized body waves presents a challenge that offers to unlock the flexibility
in wave transpor... | 1912.05373v1 |
2020-10-23 | Possible coexistence of kinetic Alfvén and ion Bernstein modes in sub-ion scale compressive turbulence in the solar wind | We investigate compressive turbulence at sub-ion scales with measurements
from the Magnetospheric MultiScale Mission. The tetrahedral configuration and
high time resolution density data obtained by calibrating spacecraft potential
allow an investigation of the turbulent density fluctuations in the solar wind
and their ... | 2010.12240v1 |
2003-04-17 | Antiferromagnetism and d-wave superconductivity in (doped) Mott insulators: A wave function approach | We propose a class of wave functions that provide a unified description of
antiferromagnetism and d-wave superconductivity in (doped) Mott insulators. The
wave function has a Jastrow form and prohibits double occupancies. In the
absence of holes, the wave function describes antiferromagnetism accurately.
Off diagonal l... | 0304388v2 |
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